You isolate mammalian gut cells and inhibit the function of the Na+/K+ ATPase chemically. Then, you slowly increase the extracellular concentration of Na+. Under these conditions, you might expect to see .. Group of answer choices Increased fructose uptake. Increased glucose uptake. Decreased monoacylglycerol uptake. Decreased free fatty acid uptake. All of the above None of the above

You isolate mammalian gut cells and inhibit the function of the Na+/K+ ATPase chemically. Then, you slowly increase the extracellular concentration of Na+. Under these conditions, you might expect to see .. Group of answer choices Increased fructose uptake. Increased glucose uptake. Decreased monoacylglycerol uptake. Decreased free fatty acid uptake. All of the above None of the above

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter27: Metabolic Integration And Organ Specialization

Section: Chapter Questions

Problem 19P

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How does the Na+/ K+ ATPase play a role in glucose transport? phosphorylates GLUT1 to activate it pumps Na+ across plasma membranes into cytoplasm to activate the sodium-glucose transporter pumps Na+ across basal plasma membrane to the outside of intestinal cells so that co-transport of glucose with Na+ into cytoplasm is facilitated allows for the diffusion of K+ inside of cell so that co-transport with glucose is facilitated
Which of the following is least likely to contribute to reduced fat oxidation at high intensities? Group of answer choices pick one only Inhibited lipolysis Increased lactic acid production. Inhibited FA transport into the muscle. Inhibited FA transport into the mitochondria
If sucrase breaks down sucrose and a mystery sugar inhibits sucrase from breaking down sucrose allowing sucrose to mobilize in the body, what kind of inhibition is the mystery sugar? i.e. uncompetitive, competitive, non-competitive
Which of the following statements is/are TRUE?A. Cells in a resting metabolic state have low ATP and NADH.B. Cells in a highly active metabolic state have high ATP but low NADH.C. Cells in a highly active metabolic state has high NADH but low ATP.In the stomach, the dietary fats are emulsified by?A.peristalsisB.pancreatic lipaseC. bile saltsD. lingual lipase
If your body sense that is very low on the substrates necessary to produce ATP homeostatic control mechanisms will alter enzyme levels such that your body begins the processes of deamination and gluconeogenesis. Combined, these two sets of chemical pathways convert amino acids and already assembled proteins into substrates for glycolysis and the citric acid cycle, thereby replenishing (in part) your supply of energy. This is an example of what? a. positive feedback loop b. negative feedback loop c.feedforward regulation
If a mutation in a sodium channel in an Intestinal epithelial cell caused a marked decrease In the concentration gradient of sodium across the plasma membrane, which of the following would you expect to observe? a decrease in Na/K ATPase activity. an increase in the movement of glucose across the basolateral membrane to the extracellular space an increase in sodium/glucose co-transport into the cell across the apical membrane a decrease in cytoplasmic glucose concentration
What is the advantage of using ATP as a common energy source?Another way of asking this question is, “Why does ATP provide anadvantage over using a bunch of different food molecules?” For example,instead of just having a Na+/K+-ATPase in a cell, why not have manydifferent ion pumps, each driven by a different food molecule, like aNa+/K+-glucosase (a pump that uses glucose), a Na+/K+-sucrase (a pumpthat uses sucrose), a Na+/K+-fatty acidase (a pump that uses fatty acids),and so on?
Which of the following factors favor fatty acid synthesis in liver cells when blood glucose levels are way higher than 10 mM? a.high NADPH and high NADH b low NADPH and low NADH c low NADPH and low NAD+ d high NADPH and high NAD+
The hormone glucagon signifies the starved state, yet it inhibits glycolysis in the liver. How does this inhibition of an energy-production pathway benefit the organism?
Which of the following would slow down glycolysis in liver cells? -Phosphorylation of phosphofructose kinase 2 -Dephosphorylation of pyruvate kinase - Increase in fructose-1,6-bisphosphate levels -Increase in fructose-2,6-bisphospahte levels From what we have learnt in this course, activation of protein phosphatase, which removes phosphorylgroups from phosphorylated proteins or enzymes, will most likely ... -Activate glycogen synthesis -inhibit glycolysis - Both A and B -Neither A nor B
Under aerobic conditions of high ratios of NADH/NAD+ and ATP/ADP, as pyruvate is utilized for its carbon skeleton, which molecules would you expect to see significant radiolabeling in the liver? Select all that apply. **Please note some molecules contain more details, including not only molecule name, but location of the label. Pick the options that are accurate for the above situation. 1. Glucose C2 & C5 2. Glucose C1 & C6 3. Glucose C2 only 4. Pyruvate C1 5. Lactate C2 for export 6.CO2 from TCA cycle shows some radiolabel 7. Label is halved over many TCA cycles 8. Oxaloacetate 9. Malate
Order the steps (from 1-16) by which a person can generate ATP from dietary fat. ATP synthesis coupled to the movement of protons down the proton concentration gradient occurs. NADH and FADH2 electrons are transferred to O2 Acetyl-CoA are degraded to GTP, NADH and FADH2 in citric acid cycle. Fatty acids are degraded to acetyl-CoA, NADH…